@article{GDZPPN002482177, title = {Linearly Independent Zeros of Quadratic Forms over Number-Fields.}, journal = {Monatshefte f\"ur Mathematik}, volume = {90}, year = {1980}, pages = {13-26}, zbl = {0431.10012}, url = {http://dml.mathdoc.fr/item/GDZPPN002482177} }
Chalk, J.H.H. Linearly Independent Zeros of Quadratic Forms over Number-Fields.. Monatshefte für Mathematik, Tome 90 (1980) pp. 13-26. http://gdmltest.u-ga.fr/item/GDZPPN002482177/